Fire Agate Information

Fire Agate is a beautiful gemstone that shows a unique rainbow
colored pattern. Fire agate is a layered stone. The layers are small
enough that light entering them forms interference colours, known as
“fire.”

The formation of Fire Agate is thought to occur when hot
water that is rich in colloidal silica and iron oxide flows into rock
cavities and cools down. As the surface begins to cool, it starts to
form into Chalcedony. However, Fire Agate is unique because as it cools
it continues to deposit layer upon layer of Chalcedony onto the existing
mineral. These layers cause the brilliant rainbow colors in the gem. As
the Iron oxide begins to run out, the mineral turns into colorless
Chalcedony making a nice see through protective layer.

Colour:

Some Fire Agate varieties have been famous for their specific colour such as orange-red agate.

Sources:

Fire
agate has only been discovered in the southern area of USA and other
significant parts of Mexico. It has been also been found in California,
Arizona and Kingman. It has also been established in the locality of the
Colorado River. In Mexico, fire agate has been originated in two
significant states like San Luis Potosi and Aguascalientes.